ATPL: The main reason for the occurrence of season on The Earth is
Domanda 372, General Navigation - ATPL - Airline Transport Pilot license
| The length of the day as stated by the second law of Kepler. |
| The elliptical form of the orbit of The Earth around The Sun. |
| The distance between the sun and The Earth. |
| The inclination of the earth axis with regard to the plane of the ecliptic. |
